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H. F. CAVANAUGH AND A. DURAN.

PORTABLE DISH WASHER.

APPLICATION FILED )UNE 13. |9I8.

Patented Sept. 2,- 1919.

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HAniaY n. cAvAnAncri im Ammin DoiaAn, or OAKLAND, cALrroanrA.

AVPOJEULAYBIE DISH-WASHER.

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`To aZZ whom it may concern.'

i, Be it known that we, HARRY @AWA- NAUGH and Ammin DORAN, citizens ofthe United' States, residing at Uakland, in the county of Alameda and State 'of California, have invented new and useful improvements in Portable Dish-Washers, of which the following is a specification.

rlFhis invention relates to a dish washin U machine, and particularly to a machine o? shaped. Another object of the invention is 4to provide a water-tight casing for the washing machine to permit itto b e practically submerged when placed in a dish washing receptacle. Another `object of the inven tion is to provide a propeller for circulating and driving the wash water through the dishes in the receptacle; also to provide a Apermanent mounting for said propeller and an electric motor which may be connected with, or disconnected from,'the propeller will. Another object' of the invention is provide means for guiding the water discharging from the propeller so that a Jetlike eect may be obtained and also to provide aplurality of return passages for the water which deliver the water to the rear side of the propeller. Further objects will hereinafter appear.

The invention consists of the parts and the construction, combination and arrangement of parts as hereinafter more fully de scribed and claimed, having reference to the accompanying drawings in which- Figure 1 is a central, vertical section `through the dish washing machine. Fig. 2 is a cross section 1n plan view taken on the line 2.,-2 of Fig. 1.

Fig. 3 is a vertical cross section on a ren; i duced scale, taken on line 3 3 of Fig. 1.` l

Referring to the drawings in detail, A

indicates'in general a casing which consists of a rear section 2, a front section 3, side sections 4 and a bottoni' section 5. Formed Specication of Letters JPatent.

Patented Sept.. 2, 19192.

Application filed Tunev 13, 1918;. Serial No. 239,869.

inthe forward section` of the casing is a cir.l cular recess 6 and communicating' with the inner end of said recess are a plurality ci passages 7. Formed integral with the inner wall 8 of the recess, or suitably secured thereto, is a bearing member 9 in which is journaled a shaft 10. 'Secured on thev outer end of said shaft is a propeller 11 of suitable construction and secured on the inner end of the shaft within the casing is a flexible coupling member 12 of the universal type. l rlhis coupling consists of a disk in which 1s formed across slot 12El and power is transmitted" through the coupling in a manner hereinafter to be described..

Forming a cover for the recess 6 is a screen 13 and carried by theouter end of the bearing member 9 is a stuiiing box 11 which prevents water from leaking through the lsu crates with the disk 12 previously described,

that is, the coupling member 21 is provided with a projecting tongue 22 which is adapted to enter the slot 12L of the opposite coupling member. Power is transmitted to rotate the shaft 19 and the coperating connected members by means of abelt 23 which is driven by a pulley 241 secured on the motor shaft.

1nl actual operation, if it is desired to wash a considerable quantity of dishes it is only necessary to place the same' in ,wire baskets or like .receptacles which may be placed in 'a tank ofhot water. 'The dish washing machine generally shown in Figs.

:1 and 2 is then alsoplaced in a tank in any vconvenient position. A circuit through the lated, at a high velocity and as stream `or jet action is obtained by the propeller, it can readily be seen that the water will be Y forced through the dishes at such a velocity that they will be rapidly rinsed or cleaned The washing machine may be moved about the tank to direct the water as desired, or the baskets containing the dishes may 'be turned so that the water may enter from different angles.

A d'sh washing machine constructed as here shown has many advantages. First, the size or shape of the tank in which it is placed while the washing operation is taking l5 place makes very little difference; secondly,

it may be moved from one tank to another, for instance, it may be placed in a washing tank containing soap water and may afterward be placed in a rinsing tank. Third, it

. 210 is so simple that nothing can get out of order and if it is desired at any time to take up slack in the driving belt or to lubricate the bearings itis vonly necessary tolift out the angle iron frame as this sits loosely within the casing. This angle frame is entirely open when lifted out of the casing, thus permitting the belt to be readily adjusted and the motor and bearin 19 to be 1ubricated whenever desired. ourth, the construction of the universal coupling compristhe disks V12 and 21 is also of importance as either may be connected when the angle iron frame is reinserted by merely turning the propeller until the slot 12a alines with the projection 22 and disk 21, that is, both rcoupling sectionsv are moved into vertical alinement when the-parts are reassembled or replaced within the casing, thus permitting the coupling to be quickly connected with comparatively little effort. Fifth, the provision of the screen 1 3 prevents food particles, dish rags or any like objects from entering the. propeller, thus guarding it against damage, and the provision of the passages 7 permits -an ideal circulation of the ,wash

Water as the forward opening allows the water to freely discharge while the passages 7 permit an ideal return of the water.

-The motor, employed in the present instance is comparatively small, actual practice having proven that 1/15th I-I. P. is more than sufficient. It is therefore unnecessary to employ a rheostatic switch and the circuit through the motor can therefore be established byan ordinaryl lighting switch details of construction may be resorted to within the recess, a earin member within the casing in alinement wit the first-named bearing member, a shaft journaled in said last-named bearing member, a flexible coupling connecting the propeller shaft with the' last-named shaft, an electric motor within the casing, and a belt drive connection between the motor and the shaft within the casing.

2. A dish washing machine comprising a casing having a cylindrical recess formed in its forward face, a journal member carried by the casingcentrally positioned with relation to said recess, a shaft mounted on said journal member, a propeller on said shaft within the recess, means within the casing for driving the propeller and a plurality of passages in the casin communicating at one lend with the exterior of the casin and at their opposite ends with the interlor of the cylindrical recess.

3. In a dish washing machine, a watertight casing, a ropeller permanently journaled in the caslng exterior thereof, a driving connection on'the interior side of the casing, a motor within the casing, means for transmitting power from the motor to the driving connection, a recess-in the casing forming a housing around the propeller, said recess having a forward central discharge opening and a plurality of passages formed in the casing communicating at their inner ends with the recess and at their outer ends with the exterior of the casing.

4. In a dish washingmachine, a watertight casing, a cylindrical recess formed in the forward face of said casing, a propeller within saidyrecess permanently journaled in the casing, a removable frame within the casing, a motor carried by said frame, a journal vmember carried by said frame, a shaft in said journal member, means for transmitting power from themotor to rotate said shaft and means for transmitting power from said` shaft. to drive the propeller.

5. In a vdish washing machine, a waterJ leo tight casing, a cylindrical recess formed in the forward face of said casing, a propeller within said recess permanently journaled in the casing, a removable frame within the casing, a motor carried by/said frame, a

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journal member carried by said frame, a shaft in said journal member, means for transmitting power from the motor to rotate said shaft, means for transmitting power from said shaft to drive the propeller, said means comprising a universal coupling, a plurality of passages formed in the casing communicating at their outer ends with the exterior of the casing and at their opposite ends with the interior of the recess, sald recess having a central forward opening and a screen covering for said opening.

6. A dish washing machine comprising a water-tight casing, a propeller permanently 

